The growing amount of international collaborations in research, education, and business fields has raised once again the demand for quality assurance of network connections, which the projects and applications are realized upon. A large spectrum of examples with diverse requirements is found in areas such as GRID and cloud computing, eLearning, video on demand, and video-conferencing. The consequences of these diverse project and application requirements culminate in the urgent necessity to provide an End-to-End (E2E) guarantee for any user-tailored combination of service-specific Quality of Service (QoS) parameters. The quality of the overall network connections provided to users directly depends on the quality of the involved connection parts. This means that already during the routing process the quality of available connection parts has to be considered. Especially for international connections it is common that multiple service providers (SPs) realize different connection segments. At the same time the inter-domain routing is driven mostly by the combination of business interests and restrictive information policies. This means that during the routing not only the optimality of the available connection parts has to be considered, but also the preferences and restrictions of the involved provider domains. In this paper, we present an inter-domain routing algorithm for distinguishing the E2E route for dedicated point-to-point connections. The proposed algorithm considers both the E2E user requirements for service quality and the service provider constraints. The proposed algorithm is not restricted to consider a sole quality parameter and can therefore be used for the establishment of connections with the user-tailored combination of connection properties, including service quality as well as connection management functionality.
The growing significance of international collaborations in research, education, and business fields has raised the demand for the assurance of the quality of the network connections which the projects and applications are realized upon. A large spectrum of examples with diverse requirements is found in areas such as GRID-and Cloud computing, eLearning, and video-conferencing. The consequences of these diverse project and application requirements culminate in the urgent necessity to provide an End-to-End (E2E) guarantee for any customer-specific or user-tailored combination of service-specific Quality of Service (QoS) parameters.The quality of the overall network connections provided to users obviously directly depends on the quality of the involved connection parts. This means that already during the setup negotiation process the quality of the available connection parts has to be considered. Especially for international connections it is common that multiple independent service providers (SPs) realize different connection segments. This means in turn, that during the information exchange about available connection parts not only the technical challenges have to be solved, but also preferences and restrictions of the involved provider domains must be considered.In this paper we present a novel information model for the description of such connections. In the proposed model, a multi-domain view is derived from the single-domain perspectives of each considered SP. This model serves as a pro-found basis for an end-to-end routing algorithm which considers multiple user specific QoS parameters in parallel. The proposed model also accounts for the typically very restrictive SP information policies.
Keywords-network description; multi-domain information model; multi-QoS supportI.
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